While a man is happy he may forget his God; but when grief comes and sorrows overwhelm him, then will he remember his Father who is in Heaven, and who is able to deliver him from his humiliations.
Men who suffer not, attain no perfection. The plant most pruned by the gardeners is that one which, when the summer comes, will have the most beautiful blossoms and the most abundant fruit.
The labourer cuts up the earth with his plough, and from that earth comes the rich and plentiful harvest. The more a man is chastened, the greater is the harvest of spiritual virtues shown forth by him. A soldier is no good General until he has been in the front of the fiercest battle and has received the deepest wounds. ('Abdu'l-Baha, Paris Talks, p. 50)