The real voyage of discovery consists not in seeking new landscapes, but in having new eyes.

We feel in one world, we think and name in another. Between the two we can set up a system of references, but we cannot fill in the gap.

Let us be grateful to people who make us happy.

Everybody calls "clear" those ideas which have the same degree of confusion as his own.

The heart changes...but we learn of it only from reading or by imagination; for in reality its alteration, like that of certain natural phenomena, is so gradual that, even if we are able to distinguish, successively, each of its different states, we are still spared the actual sensation of change.

The most familiar precepts are not always the truest.

Many years have passed since that night. The wall of the staircase up which I had watched the light of his candle gradually climb was long ago demolished. And in myself, too, many things have perished which I imagined would last for ever, and new ones have arisen, giving birth to new sorrows and new joys which in those days I could not have foreseen, just as now the old are hard to understand.