

“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.”
Traced to The Notebooks of Leonardo da Vinci (1883).
More from Leonardo da Vinci
“While I thought I have been learning how to live, I have been learning how to die.”
Leonardo da Vinci
The Notebooks of Leonardo da Vinci (MacCurdy translation) · 1938
verified“Truth was the only daughter of Time.”
Leonardo da Vinci
The Notebooks of Leonardo da Vinci · 1883
verified“Experience never errs; it is only your judgments that err by promising themselves effects such as are not caused by your experiments.”
Leonardo da Vinci
The Notebooks of Leonardo da Vinci · 1883
verified“Obstacles cannot crush me. Every obstacle yields to stern resolve. He who is fixed to a star does not change his mind.”
Leonardo da Vinci
The Notebooks of Leonardo da Vinci · 1883
verified“The greatest deception men suffer is from their own opinions.”
Leonardo da Vinci
The Notebooks of Leonardo da Vinci · 1883
verified“The water you touch in a river is the last of that which has passed, and the first of that which is coming. Thus it is with time present.”
Leonardo da Vinci
The Notebooks of Leonardo da Vinci · 1883
verifiedMore Motivational quotes
“Optimism is the faith that leads to achievement; nothing can be done without hope.”
Helen Keller
Optimism · 1903
verified“One can never consent to creep when one feels an impulse to soar.”
Helen Keller
Address to the American Association to Promote the Teaching of Speech to the Deaf · 1896
verified“When one door of happiness closes, another opens; but often we look so long at the closed door that we do not see the one which has been opened for us.”
Helen Keller
We Bereaved · 1929
verified“You may never know what results come of your actions. But if you do nothing, there will be no result.”
Mahatma Gandhi
Speech at a prayer meeting, New Delhi · 1947
verified“What man actually needs is not a tensionless state but rather the striving and struggling for some goal worthy of him. What he needs is not the discharge of tension at any cost, but the call of a potential meaning waiting to be fulfilled by him.”
Viktor Frankl
Man's Search for Meaning · 1959
verified“The time is always right to do what's right.”
Martin Luther King Jr.
The Future of Integration, address at Oberlin College · 1964
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