Reason deceives us; conscience, never.

Self-love is an instrument useful but dangerous; it often wounds the hand which makes use of it, and seldom does good without doing harm.

To discover the rules of society that are best suited to nations, there would need to exist a superior intelligence, who could understand the passions of men without feeling any of them, who had no affinity with our nature but knew it to the full, whose happiness was independent of ours, but who would nevertheless make our happiness his concern, who would be content to wait in the fullness of time for a distant glory, and to labour in one age to enjoy the fruits in another. Gods would be needed to give men laws.

Everything we do not have at our birth and which we need when we are grown is given to us by education.

Trust your heart rather than your head.

As evening approached, I came down from the heights of the island, and I liked then to go and sit on the shingle in some secluded spot by the lake; there the noise of the waves and the movement of the water, taking hold of my senses and driving all other agitation from my soul, would plunge me into delicious reverie in which night often stole upon me unawares.

Childhood is the sleep of reason.