Final answer:
Max Weber coined the phrase "value-free sociology" to highlight the need for objectivity in sociological research without the influence of personal biases.
Step-by-step explanation:
The phrase "value-free sociology" was coined by Max Weber. Weber introduced this concept to argue for objectivity in sociological research, stressing the importance of studying social facts without allowing personal biases to affect the findings. He believed that sociologists should not only study what is happening in society but also understand it from the perspective of those living within it, a concept known as verstehen. While Weber emphasized the limitations of using traditional scientific methods for predicting human behavior, he nonetheless proposed that sociology can be carried out without the researcher’s personal values influencing the results.