Imagination helps the realism of every detail, and only sees the beauties of the work.

Inspiration is the opportunity of genius.

The key to all sciences is unquestionably the question mark. To the word How? we owe most of our greatest discoveries. Wisdom in life may perhaps consist in asking ourselves on all occasions: Why?

Is there any instinct more deeply implanted in the heart of man than the pride of protection, a protection which is constantly exerted for a fragile and defenceless creature?

The mind, too, has its regimen. It needs gymnastics, just like the body does.

What moralist can deny that well-bred and vicious people are much more agreeable than their virtuous counterparts? Having crimes to atone for, they provisionally solicit indulgence by showing leniency toward the defects of their judges. Thus they pass for excellent folk.

We do not attach ourselves lastingly to anything that has not cost us care, labor or longing.