First of all, we cannot fail to mention Da Vinci's Mona Lisa. With its mysterious smile and profound connotation, this painting has attracted the attention of countless people. The unfathomable smile of the woman in the painting seems to contain endless wisdom and emotion, which makes people feel the complexity and depth of human emotions while appreciating. And Da Vinci's use of light and shadow effects and perspective, but also pushed the painting to the peak of art.

Next, let's look at Vincent Van Gogh's Starry Night. With its unique style and strong emotional expression, this painting has become a representative of modern art. Van Gogh used strong colors and exaggerated lines to portray the stars and moon in the night sky as if they were in a mysterious and peaceful dream. The love for nature and passion for life revealed in the painting make people feel the surging and passionate heart of the artist.

Also, let's not forget Picasso's Guernica. With its profound social connotation and unique artistic style, this painting has become one of the most representative works. Picasso used cubism to present the cruelty of war and the suffering of the people in an abstract form, which not only shocked people, but also triggered profound thinking. This painting is not only an indictment of the war, but also a profound reflection on human civilization.

In addition to the few paintings mentioned above, there are many other great works worthy of our appreciation and taste. For example, Ingres's Portrait of Madame Motsier, with its delicate brushwork and elegant style, shows the nobility and elegance of a French noblewoman; Michelangelo's Genesis, with its magnificent momentum and exquisite skills, shows the greatness and holiness of human creation of the world.

These paintings not only represent the highest artistic achievements of various periods and schools, but also become the treasures of human culture with their profound ideological connotation and unique artistic style. They not only let us appreciate the charm of art, but also let us think about life and understand the world while appreciating.

However, we also have to understand that art is subjective, and everyone's feelings and understanding of art are different. Therefore, there must be different voices and opinions about the "greatest paintings of all time". In any case, these paintings are the crystallization of human wisdom and creativity, and they have become an important part of human civilization with their unique charm and value.

Finally, I would like to say that appreciating art is not only an aesthetic activity, but also a spiritual enjoyment. When we stand in front of these great paintings, we may wish to feel their connotation and value with our hearts, so that the power of art can penetrate into our hearts and inspire our creativity and imagination.

In short, the greatest paintings of all time are the treasures of human civilization. With their unique charm and value, they make us feel the infinite charm and power of art. Let's walk into the world of these paintings together, feel the charm of art, and understand the true meaning of life.