Just as iron rusts from disuse, even so does inaction spoil the intellect.
He who is fixed to a star does not change his mind.
As every divided kingdom falls, so every mind divided between many studies confounds and saps itself.
Represent your figures in such action as may be fitted to express what purpose is in the mind of each; otherwise your art will not be admirable.
I love those who can smile in trouble, who can gather strength from distress, and grow brave by reflection. 'Tis the business of little minds to shrink, but they whose heart is firm, and whose conscience approves their conduct, will pursue their principles unto death.
Obstacles cannot crush me. Every obstacle yields to stern resolve. He who is fixed to a star does not change his mind.
The knowledge of past times and of the places on the earth is both an ornament and nutriment to the human mind.
Every action needs to be prompted by a motive. To know and to will are two operations of the human mind. Discerning, judging, deliberating are acts of the human mind.
Iron rusts from disuse; stagnant water loses its purity and in cold weather becomes frozen; even so does inaction sap the vigor of the mind.