He has constantly used the weapon of persuasion to convince people that the cumulative result of even small changes could be substantial .
He is a fervent advocate of built environments and facilities that are a joy rather than a trial to use by everyone .
advocate has constantly used the weapon of persuasion to convince people that the cumulative result of even small changes could be substantial .
He is a fervent advocate of built environments and facilities that are a joy rather than a trial to use by everyone .