To examine the principle through its consequences, is permitted by serene logic and commanded by sound reason.
June 28.
Liberty. The liberty to do good. No others are needed.
Truths. The truths that teach us to act well and live well. No others are needed either.
A dark brain, a heavy mind, a frozen imagination, and a heated reason: these are deformities.
Yes, “conform yourself to nature.” She wants you to be mediocre, be mediocre, yield to the wiser, adopt their opinions. Do not trouble the world, since you would not know how to govern it.
June 29.
One cannot reason without using some abstraction; every principle is one.
We always infer from an essence to a fact, so that truth can be found only in the major premise, and the true in the conclusion.
The conclusion contains only an accidental and momentary truth...
There are good sciences whose existence is necessary and whose cultivation is useless. Such is mathematics.
Abuse of words, foundation of ideology.
July 1.
The prie-dieu. A piece of furniture indispensable to good order. Where it is absent there are no household gods, no respect, etc.
July 3.
(At Vaugirard.) These altars raised to modesty (the Virgin), to patience in suffering (the Martyrs), to austerity (the Cenobites), to compassion, etc. finally to God’s love for men (the Crucifix)...
Plants have joy. — takes away the plants’ chastity. — Everything is confused, flowers are given an appetite that is animal.
July 4.
The punishment of those who have loved women too much is to love them always.
July 5.
D’Aguesseau has too much evenness in the advance of his reason.
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The Notebooks of Joseph Joubert, Volume II · Book Mode · Diotimos