“Leave all the afternoon for exercise and recreation, which are as necessary as reading. I will rather say more necessary because health is worth more than learning.”
“Never say more than is necessary.”
“Distrust the book which reads too easily because such writing appeals more to the senses than to the intellect. Hard reading exercises the mind.”
“Most "necessary evils" are far more evil than necessary.”
“He suffers more than necessary, who suffers before it is necessary.”
“We labour at our daily work more ardently and thoughtlessly than is necessary to sustain our life because it is even more necessary not to have leisure to stop and think. Haste is universal because everyone is in flight from himself.”