What are the famous aphorisms about being sincere and grasping the degree of friendship?

1 Friendship is that two hearts treat each other sincerely, not that one heart beats the other. -Lu Xun's Selected Essays of Lu Xun

2 Sincerity doesn't matter much, it doesn't matter little, it doesn't matter enough, it doesn't matter lack. Unless there is no sincerity, you will be at a loss for sincerity. -Mu Xin's Improvised Judgment

3 It is dangerous to be insincere, but it is absolutely fatal to be too sincere. -Oscar Wilde

4 Sincerity will be ridiculous if you don't talk about the object and the proportion. Sincerity is played with, and its embarrassment is no less than hypocrisy being exposed. -Zhou Guoping's Quotations from Zhou Guoping

5 A sincere person will not hate others. -Napoleon

6 False sincerity is more terrible than magic. -Tagore

7 I believe in treating each other sincerely, and I also believe in accepting misfortune. -Han Han's Life as I Understand

8 Sincerity and love are qualities that I will never give up. -San Mao's Dear San Mao

9 Three things make a person: sincerity, commitment and diligence. -

1 What makes life so beautiful is our hidden sincerity and childlike innocence. -Anthony de Saint-Exupery's The Little Prince

11 Sincere friends, good books and a sleeping conscience, this is the ideal life. -Mark Twain

12 If a person lives sincerely, he must live in a distant country. -Thoreau's Walden

13 I have always adhered to the eight-character principle of treating my friends-sincerity, care, listening and understanding. -Yu Minhong's "Looking for Hope in Despair"

14 The lie became more and more sincere, and finally even she got comfort from it. -Marquez's One Hundred Years of Solitude

15 As long as I have a pair of sincere eyes to cry with me, it is worth my suffering for my life. -romain rolland's "The Soul of Joy"