The antonyms for the phrase "chip old blocks" are to preserve, cherish, and maintain. While "chip old blocks" means to remove or discard old and outdated ideas or obstacles, the antonyms suggest the opposite - to hold onto and protect the things that are worth keeping. By preserving the thoughts and practices that have stood the test of time, we can learn from the past and build a better foundation for the future. Rather than discarding the old, it is important to embrace it and give it the respect and significance it deserves. In doing so, we can maintain a connection to our past and ensure a brighter future for all.