We accepted this war for an object, a worthy object, and the war will end when that object is attained. Under God, I hope it never will until that time.
Perfect health, sincerity, honesty, straightforwardness, courage, disinterestedness, unselfishness, patience, endurance, perseverance, peace, calm, self control are all things that are taught infinitely better by example than by beautiful speeches.
The real test is not whether you avoid failure, because you won't. It's whether you let it harden or shame you into inaction, or whether you learn from it. . .
The longing to behold this pre-established harmony [of phenomena and theoretical principles] is the source of the inexhaustible patience and perseverance with which Planck has devoted himself ... The state of mind which enables a man to do work of this kind is akin to that of the religious worshiper or the lover; the daily effort comes from no deliberate intention or program, but straight from the heart.
If his decision is correct, he will win the battle, even if it lasts longer than expected. If his decision is wrong, he will be defeated and he will have to start all over again-only this time with more wisdom. But once he has started, a warrior of the light perseveres until the end.
Gently eliminating all obstacles to his own understanding, he constantly maintains his unconditional sincerity. His humility, perseverance, and adaptability evoke the response of the universe and fill him with divine light.