Doubt must be no more than vigilance, otherwise it can become dangerous.

Do not judge God's world from your own. Trim your own hedge as you wish and plant your flowers in the patterns you can understand, but do not judge the garden of nature from your little window box.

One might call habit a moral friction: something that prevents the mind from gliding over things but connects it with them and makes it hard for it to free itself from them.

Before we blame we should first see whether we cannot excuse.

He who says he hates every kind of flattery, and says it in earnest, certainly does not yet know every kind of flattery.

The human tendency to regard little things as important has produced very many great things.

First there is a time when we believe everything, then for a little while we believe with discrimination, then we believe nothing whatever, and then we believe everything again - and, moreover, give reasons why we believe.