What makes a Architect a Great Architect

Since enrolling into architecture, I have difficulty answer one critical question. What makes a Architect a Great Architect? Because there seems to be no real answer in the field of architecture, its hard to answer the question. Is it being able design a building that fit into the context of the environment or introducing something new to the design realm of architect. Is the architect that designed the Bird Nest in Beijing, China considered a Great Architect. Was Daniel Burham or Frank Lloyd great architects? What are the guidelines. I ask one of my teaches if she could answer the question. Although she thought she answered the question, she really didn't. One day, I just may be answered

Water-Architect's Worst Enemy

Water has caused many problems in the buildings that architects design. For the longest, architects have tried to manage and control how water reacts to their building. It's a critical issue that has not been completely solved. Whenever water enter a building, its never good. Water in buildings have resulted in molding, rusting, and in the worse case, has caused a building to fall down.