The joy of mathematics comes from the struggle to understand.

孩子从你的行为中学到的比从你的教导中学到的更多。

The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.

The only way to do great work is to love what you do.

智者能够从自然界的秩序中汲取启示，以指导个体的生活。