Immitation is the sincerest form of flattery.

Unlike the sun, intellectual luminaries shine brightest after they set.

Secrecy is the soul of all great designs. Perhaps more has been effected by concealing our own intentions than by discovering those of our enemy.

Nothing is more durable than the dynasty of Doubt; for he reigns in the hearts of all his people, but gives satisfaction to none of them, and yet he is the only despot who can never die, while any of his subjects live.

Observation made in the cloister or in the desert will generally be as obscure as the one and as barren as the other; but he that would paint with his pencil must study originals, and not be over-fearful of a little dust.

Self-denial is often the sacrifice of one sort of self-love for another.

There is no cruelty so inexorable and unrelenting as that which proceeds from a bigoted and presumptuous supposition of doing service to God. The victim of the fanatical persecutor will find that the stronger the motives he can urge for mercy are, the weaker will be his chance for obtaining it, for the merit of his destruction will be supposed to rise in value in proportion as it is effected at the expense of every feeling both of justice and of humanity.