You use all to refer to a situation or to life in general. Discover the shared vision of @sailgpfra and @all for more responsible travel, hospitality, and experiences. The governor mounted a halfhearted campaign for the presidency but didn't.
When 'all' is a pronoun, it can come with both singular and plural nouns. All is silent on the island now. The whole of (used in referring to quantity, extent, or duration):
As you'll have read in our news pages, all has not been well of late. The whole number of (used in referring to individuals or particulars, taken collectively): Like quentin delapierre and his crew, we are all looking in the same direction. There are 63 meanings listed in oed's entry for the word all, two of which are labelled obsolete.
• there was a sound of. Putting all of one's available resources into an effort: • there are leaves all over the car. When we say all (of) the students, we're talking about a specific group of students.
See ‘meaning & use’ for definitions, usage, and quotation evidence. • the choir has sung in concerts all over the country. • katie's toys were spread out all over the floor. • she had flour and stuff all over her hands.
When 'all' refers to a group of people/things as a unified whole, it comes with a singular verb, but when 'all' refers to multiple groups. The meaning of all is the whole amount, quantity, or extent of. Every one (of), or the complete amount or number (of), or the whole (of): How to use all in a sentence.