Suspicion is very often a useless pain.

Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.

The joy of life is variety.

In order that all men may be taught to speak truth, it is necessary that all likewise should learn to hear it; for no species of falsehood is more frequent than flattery, to which the coward is betrayed by fear, the dependent by interest, and the friend by tenderness: those who are neither servile nor timorous are yet desirous to bestow pleasure; and, while unjust demands of praise continue to be made, there will always be some whom hope, fear, or kindness will dispose to pay them.

Nothing is more common than mutual dislike, where mutual approbation is particularly expected.

He that can swim needs not despair to fly; to swim is to fly in a grosser fluid, and to fly is to swim in a subtler. We are only to proportion our power of resistance to the different density of matter through which we are to pass. You will be necessarily upborne by the air if you can renew any impulse upon it faster than the air can recede from the pressure.

Distance has the same effect on the mind as on the eye.