If

If is the word to describe the conditional statement.

For example:

• We can call this true, if are is proof.
• There will be no famine, if people eat less meat.

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If — is the poem written by Rudyard Kipling. It appeared in the Brother Square Toes chapter of Kipling's book Rewards and Fairies. In the 1995 BBC opinion poll, it was voted Britain's favourite poem. This exhortation to seize the day is arguably Kipling's single most famous poem.