1. Infinitive tense is the verb in the 'to' form, so you got it right there: to climb.
2. Third person singular present tense is the present tense plus the letter 's' at the end because it is in third person.: climbs
3. Past tense is something that happened in the past: climbed
4. Participle is like the -ing form.: climbing
Sodapop, sometimes called “Soda,” is the middle of the three Curtis brothers. He is energetic, disinterested in school, and movie-star handsome. Sodapop is a very happy-go-lucky person who is very optimistic. However, he also has a sensitive and caring personality. He showed this the night when he bolted from the house when Ponyboy and Darry were fighting. Overall, Soda has a very interchanging personality that is a combination of happiness and sensitivity.
If you're referring to the one who quote that sentence, it would be unknown, but it is a really famous quote.
If you wanted to restates the main idea of this quotation , it would be : it's not good to criticize others because we don't know that they face in life.
hope this helps
Hello my name is Brooklyn
