The miracle or the power that elevates the few is to be found in their industry, application and perseverance under the promptings of a brave, determined spirit.
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.
Adhere to your purpose and you will soon feel as well as you ever did. On the contrary, if you falter, and give up, you will lose the power of keeping any resolution, and will regret it all your life.
Wait with patience and love and strength. If helpers are not ready now, they will come in time. Why should we be in a hurry? The real working force of all great work is in its almost unperceived beginnings.
The king-becoming graces,
As justice, verity, temp'rance, stableness,
Bounty, perseverance, mercy, lowliness,
Devotion, patience, courage, fortitude,
I have no relish of them, but abound
In the division of each several crime,
Acting in many ways.