Where ambition can cover its enterprises, even to the person himself, under the appearance of principle, it is the most incurable and inflexible of passions

Friendship is a calm and sedate affection, conducted by reason and cemented by habit; springing from long acquaintance and mutual obligations, without jealousies or fears, and without those feverish fits of heat and cold, which cause such an agreeable torment in the amorous passion.

The free conversation of a friend is what I would prefer to any environment.

A CAUSE is an object precedent and contiguous to another, and so united with it that the idea of the one determines the mind to form the idea of the other, and the impression of the one to form a more lively idea of the other.

Superstition is an enemy to civil liberty.

The bigotry of theologians is a malady which seems almost incurable.

Riches are valuable at all times, and to all men, because they always purchase pleasures such as men are accustomed to and desire; nor can anything restrain or regulate the love of money but a sense of honor and virtue, which, if it be not nearly equal at all times, will naturally abound most in ages of knowledge and refinement.