Are there any famous aphorisms about bitter before sweet?

1, heaven is a great task, and people must first suffer their minds, work their bones and muscles, starve their bodies, empty their bodies, and do things in disorder. -Mencius? 6? 1 Gao Zixia "

Knowledge comes from hard work, and any achievement is the result of hard work. -Soong Ching Ling

3. How can the plum blossom fragrance not be a little cold?