Explain and discuss the following claim by William James: “We have to live today by what truth we can get today, and be ready to call it false

William James was a pragmatist. He believed that what was true was good. James promotes life, health, and happiness. His concept of truth is that true ideas are those that we can assimilate, validate, corroborate and verify. False ideas are those that we cannot. James rejects the idea that truth is static. He believes that "truth happens to an idea. It becomes true, is made true by events." He describes this by telling of a man who is lost in the woods and is starving. The man sees a cow path and reasons that it should lead to a farmer's house. If it does, he saves himself. This was an obvious and practical result for James.
James states: "Truth for us is simply a collective name for verification processes, just as health, wealth, strength, etc. are names for other processes connected with life, and also pursued because it pays to pursue them. Truth is made, just as health, wealth, and strength are made, in the course of experience."
One of the most controversial statements of James is that "we have to live today by what truth we can get today, and be ready tomorrow to call it falsehood." The simple reality is that today what we believe to be truth may be discarded tomorrow for a better truth, or a better description of the facts. Pragmatists conclude that pragmatism supports a relativity of truth position.
Looking at the opposite of truth, falsehood, James states that untrue beliefs work as harmfully in the long run as true beliefs work beneficially.
James tried to verify his theory of truth. When something is verified, it is known as truth.
James was someone who believed that he could find truth by the use of drugs and did experiment with substances that made him hallucinate. I totally disagree with the use of drugs for any purpose, other than to save a life. However, I am willing to believe that it may be proved that a drug such as marijuana is completely harmless and even good for a person to use in the future. I am a person who has “free will” and I still will make a choice not to partake in it.
I know that today alcohol is no better a substance than marijuana, but it is a legal drug. I make a choice not to partake of either as I truly believe that I was born with only so many brain cells and I believe that substance abuse destroys brain cells…..I need all of the brain cells I have!